Study on Root Hydraulic Lift of Drought-Tolerant and Drought-Sensitive Potato Cultivars (Solanum tuberosum L.)

In order to investigate the relationship between hydraulic lift and drought tolerance in potato, four cultivars differing susceptibilities were selected, a pot experiment with three different irrigation conditions was carried out randomized complete block design. Under (WW), of soil water not observed upper pots. half-irrigation (DW) (DD) conditions, content increased pots, along change root-related traits, higher biomass, lower proline (Pro) malondialdehyde (MDA) concentrations drought-tolerant (Longshu NO.3 Xindaping), whereas drought-sensitive (Favorita Atlantic) had contrary results. As degree stress increased, phenomenon inhibited completely, reduction biomass an increase Pro MDA accumulation. Genotypes Longshu Xindaping exhibited than Favorita Atlantic under conditions. addition, similar results also obtained for determination plant height, leaf content, root activity, root–shoot ratio. This study revealed that there redistribution among potato cultivars, strongly associated growth, allocation, other physiological traits potentially confer resistance.